"I have something with me."
Currently I am using
context.document.body.search('something', { matchCase: true, matchWholeWord: true }).load('items/NoPropertiesNeeded');
to search 'something' and the 'something' gets loaded in the taskpane.
"I have something with me. something is bothering me" Now I dont want to search the 'something' on first paragraph that was already searched and loaded in taskpane. How can I do so?
The Word.SearchOptions class doesn't provide anything for that. You need to iterate over search results like shown below and excluded unwanted results from the view or just skip them:
See Use search options in your Word add-in to find text for more information.
Note, you can post or vote for an existing feature request on Tech Community where they are considered when the Office dev team goes through the planning process.